Payload power

We might have just as easily slotted this in as our weekly report on muscle cars. SLP Performance Parts is a justly famous go-fast provider, having developed the SLP Firehawk for Pontiac and, later, the prototype of what became the Camaro SS. If you’ve just scored yourself a 2007 or 2008 Silverado, Sierra, Avalanche, Tahoe or Yukon from General Motors, SLP has a bunch of new pieces to help it look, sound and perform markedly better.

SLP has introduced both performance and appearance packages for these new Chevrolet and GMC 900-series trucks and SUVs. Looks-related upgrades include bed rails, scoops, fender vents and a lowering kit. For the visceral stuff, the Stage One performance group combines a cat-back exhaust, cold-air induction and an SLP-programmed PCM. Claimed improvements include performance hops to 350hp for the 5.3-liter V-8 and up to 400hp for the 6.0-liter VortecMax V-8.

The firm is based in Toms River, New Jersey. For info, ring ’em at 732-349-2109, or visit www.slponline.com.

(This post originally appeared in the July 5, 2007, issue of the Hemmings eWeekly Newsletter.)